bash-2.05b.tar.gz

/* A Bison parser, made from /usr/homes/chet/src/bash/src/parse.y by GNU bison 1.34. */ #define YYBISON 1 /* Identify Bison output. */ # define IF 257 # define THEN 258 # define ELSE 259 # define ELIF 260 # define FI 261 # define CASE 262 # define ESAC 263 # define FOR 264 # define SELECT 265 # define WHILE 266 # define UNTIL 267 # define DO 268 # define DONE 269 # define FUNCTION 270 # define COND_START 271 # define COND_END 272 # define COND_ERROR 273 # define IN 274 # define BANG 275 # define TIME 276 # define TIMEOPT 277 # define WORD 278 # define ASSIGNMENT_WORD 279 # define NUMBER 280 # define ARITH_CMD 281 # define ARITH_FOR_EXPRS 282 # define COND_CMD 283 # define AND_AND 284 # define OR_OR 285 # define GREATER_GREATER 286 # define LESS_LESS 287 # define LESS_AND 288 # define LESS_LESS_LESS 289 # define GREATER_AND 290 # define SEMI_SEMI 291 # define LESS_LESS_MINUS 292 # define AND_GREATER 293 # define LESS_GREATER 294 # define GREATER_BAR 295 # define yacc_EOF 296 #line 21 "/usr/homes/chet/src/bash/src/parse.y" #include "config.h" #include "bashtypes.h" #include "bashansi.h" #include "filecntl.h" #if defined (HAVE_UNISTD_H) # include <unistd.h> #endif #if defined (HAVE_LOCALE_H) # include <locale.h> #endif #include <stdio.h> #include "chartypes.h" #include <signal.h> #include "memalloc.h" #define NEED_STRFTIME_DECL /* used in externs.h */ #include "shell.h" #include "trap.h" #include "flags.h" #include "parser.h" #include "mailcheck.h" #include "test.h" #include "builtins/common.h" #include "builtins/builtext.h" #include "shmbutil.h" #if defined (READLINE) # include "bashline.h" # include <readline/readline.h> #endif /* READLINE */ #if defined (HISTORY) # include "bashhist.h" # include <readline/history.h> #endif /* HISTORY */ #if defined (JOB_CONTROL) # include "jobs.h" #endif /* JOB_CONTROL */ #if defined (ALIAS) # include "alias.h" #endif /* ALIAS */ #if defined (PROMPT_STRING_DECODE) # ifndef _MINIX # include <sys/param.h> # endif # include <time.h> # if defined (TM_IN_SYS_TIME) # include <sys/types.h> # include <sys/time.h> # endif /* TM_IN_SYS_TIME */ # include "maxpath.h" #endif /* PROMPT_STRING_DECODE */ #define RE_READ_TOKEN -99 #define NO_EXPANSION -100 #ifdef DEBUG # define YYDEBUG 1 #else # define YYDEBUG 0 #endif #if defined (HANDLE_MULTIBYTE) # define last_shell_getc_is_singlebyte \ ((shell_input_line_index > 1) \ ? shell_input_line_property[shell_input_line_index - 1] \ : 1) # define MBTEST(x) ((x) && last_shell_getc_is_singlebyte) #else # define last_shell_getc_is_singlebyte 1 # define MBTEST(x) ((x)) #endif #if defined (EXTENDED_GLOB) extern int extended_glob; #endif extern int eof_encountered; extern int no_line_editing, running_under_emacs; extern int current_command_number; extern int sourcelevel; extern int posixly_correct; extern int last_command_exit_value; extern int interrupt_immediately; extern char *shell_name, *current_host_name; extern char *dist_version; extern int patch_level; extern int dump_translatable_strings, dump_po_strings; extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin; #if defined (BUFFERED_INPUT) extern int bash_input_fd_changed; #endif extern int errno; /* **************************************************************** */ /* */ /* "Forward" declarations */ /* */ /* **************************************************************** */ #ifdef DEBUG static void debug_parser __P((int)); #endif static int yy_getc __P((void)); static int yy_ungetc __P((int)); #if defined (READLINE) static int yy_readline_get __P((void)); static int yy_readline_unget __P((int)); #endif static int yy_string_get __P((void)); static int yy_string_unget __P((int)); static int yy_stream_get __P((void)); static int yy_stream_unget __P((int)); static int shell_getc __P((int)); static void shell_ungetc __P((int)); static void discard_until __P((int)); #if defined (ALIAS) || defined (DPAREN_ARITHMETIC) static void push_string __P((char *, int, alias_t *)); static void pop_string __P((void)); static void free_string_list __P((void)); #endif static char *read_a_line __P((int)); static int reserved_word_acceptable __P((int)); static int yylex __P((void)); static int alias_expand_token __P((char *)); static int time_command_acceptable __P((void)); static int special_case_tokens __P((char *)); static int read_token __P((int)); static char *parse_matched_pair __P((int, int, int, int *, int)); #if defined (ARRAY_VARS) static char *parse_compound_assignment __P((int *)); #endif #if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND) static int parse_dparen __P((int)); static int parse_arith_cmd __P((char **)); #endif #if defined (COND_COMMAND) static void cond_error __P((void)); static COND_COM *cond_expr __P((void)); static COND_COM *cond_or __P((void)); static COND_COM *cond_and __P((void)); static COND_COM *cond_term __P((void)); static int cond_skip_newlines __P((void)); static COMMAND *parse_cond_command __P((void)); #endif #if defined (ARRAY_VARS) static int token_is_assignment __P((char *, int)); static int token_is_ident __P((char *, int)); #endif static int read_token_word __P((int)); static void discard_parser_constructs __P((int)); static char *error_token_from_token __P((int)); static char *error_token_from_text __P((void)); static void print_offending_line __P((void)); static void report_syntax_error __P((char *)); static void handle_eof_input_unit __P((void)); static void prompt_again __P((void)); #if 0 static void reset_readline_prompt __P((void)); #endif static void print_prompt __P((void)); #if defined (HISTORY) char *history_delimiting_chars __P((void)); #endif #if defined (HANDLE_MULTIBYTE) static void set_line_mbstate __P((void)); static char *shell_input_line_property = NULL; #else # define set_line_mbstate() #endif extern int yyerror __P((const char *)); #ifdef DEBUG extern int yydebug; #endif /* Default prompt strings */ char *primary_prompt = PPROMPT; char *secondary_prompt = SPROMPT; /* PROMPT_STRING_POINTER points to one of these, never to an actual string. */ char *ps1_prompt, *ps2_prompt; /* Handle on the current prompt string. Indirectly points through ps1_ or ps2_prompt. */ char **prompt_string_pointer = (char **)NULL; char *current_prompt_string; /* Non-zero means we expand aliases in commands. */ int expand_aliases = 0; /* If non-zero, the decoded prompt string undergoes parameter and variable substitution, command substitution, arithmetic substitution, string expansion, process substitution, and quote removal in decode_prompt_string. */ int promptvars = 1; /* The decoded prompt string. Used if READLINE is not defined or if editing is turned off. Analogous to current_readline_prompt. */ static char *current_decoded_prompt; /* The number of lines read from input while creating the current command. */ int current_command_line_count; /* Variables to manage the task of reading here documents, because we need to defer the reading until after a complete command has been collected. */ static REDIRECT *redir_stack[10]; int need_here_doc; /* Where shell input comes from. History expansion is performed on each line when the shell is interactive. */ static char *shell_input_line = (char *)NULL; static int shell_input_line_index; static int shell_input_line_size; /* Amount allocated for shell_input_line. */ static int shell_input_line_len; /* strlen (shell_input_line) */ /* Either zero or EOF. */ static int shell_input_line_terminator; /* The line number in a script on which a function definition starts. */ static int function_dstart; /* The line number in a script on which a function body starts. */ static int function_bstart; /* The line number in a script at which an arithmetic for command starts. */ static int arith_for_lineno; static REDIRECTEE redir; #line 276 "/usr/homes/chet/src/bash/src/parse.y" #ifndef YYSTYPE typedef union { WORD_DE